Worksheets2. Chemical Bonding - Quiz-3.
Total questions: 20
Worksheet time: 12mins
Use your knowledge to predict what the following compound is classified as.
non-polar covalent
polar covalent
ionic
metallic
Use your knowledge to predict what type of bond would form between calcium and bromine.
non-polar covalent
polar covalent
ionic
metallic
Type of bond between Br & Br
Ionic
Polar Covalent
Nonpolar Covalent
Is this molecule polar or nonpolar?
polar
nonpolar
How do you use the periodic table to determine the number of valence electrons in an atom of an element?
read the period number
for groups 1 and 2 it is the group number, for groups 13, 14, 15, etc., it is 3, 4, 5, etc.
read the electronegativity number
it is the group number exactly
How many valence electrons are in an atom of aluminum?
13
3
4
5
What is the name given to the electrons of an atom, which are available for chemical bonding?
orbital electrons
valence electrons
anions
cations
How do metals obey the octet rule when reacting to form compounds?
they gain electrons
they lose all of their valence electrons
they lose some of their valence electrons
they share electrons
What is the net overall charge on an ionic compound?
0
1+
2+
3+
Which of the following occurs in an ionic bond?
valence electrons are shared
Two atoms share two electrons.
Oppositely charged ions attract.
Like-charged ions attract.
In covalent bonds, the valence electrons
are shared evenly between the atoms
are shared, but attracted more to the element with the lower electronegativity
transfer from the metal to the nonmetal
are shared, but attracted to the element with the higher electronegativity
Which of the following occurs in a covalent bond?
electrons are transfer
electrostatic forces take over
electrons are shared to always achieve an octet
electrons are shared in order to achieve Nobel gas configuration
How many valence electrons are transferred from the nitrogen atom to potassium in the formation of the compound potassium nitride?
none of the valence electrons are transferred
1
2
3
Which of the following pairs of elements is most likely to form an ionic compound?
potassium and sodium
nitrogen and sulfur
oxygen and chlorine
magnesium and fluorine
What characteristic of metals makes them good electrical conductors?
Their crystal structures can be rearranged easily.
They have mobile protons that move around.
They have mobile ions that float around.
They have mobile valence electrons.
How do atoms achieve noble-gas electron configurations in triple covalent bonds?
One atom completely loses two electrons to the other atom in the bond.
Two atoms share two pairs of electrons.
Two atoms share six electrons.
Two atoms share one electron.
Why do atoms share electrons in covalent bonds?
they are programmed to do this
to attain a noble-gas electron configuration
to become more polar
to increase their number of protons
The bonding of a metal and non-metal is known as a _____________________.
Covalent bond
Hydrogen bond
Metallic bond
Ionic bond.
Which of the follow does NOT apply to noble gases?
Noble gases are stable.
Noble gases are very very reactive.
Noble gases have 8 valence electrons.
Noble gases are have full electron shells.
